I can't speak to the 170 wrap, as I had a 360, but I can tell you that my surgeon assured me that "pretty much anything is possible during the early stages of recovery."
There's a lot of swelling at this point and actually the swelling will continue to increase until some time on or about Day 14, and then will begin to subside. That swelling can move things out of place and allow some reflux.
Also, there's a lot of pain right now, and your esophagus is a dumb organ. It interprets all pain as reflux. Some of the reflux sensations you're experiencing can very well be post op pain, which is substantial at this point--especially with a redo.
Hang in there!
Words of wisdom by Eckhart Tolle:
"Whatever you fight, you strengthen, and what you resist, persists.”
“Worry pretends to be necessary but serves no useful purpose”
“Accept - then act. Whatever the present moment contains, accept it as if you had chosen it. Always work with it, not against it.”